PIN Name
PIN No.
Description
X C L K
35
IP_CLK(30MHz) input from OSC.3
/RESET
2
/RST_OUT input from U1-178
SI
89
From line scanning to start signal output at 2.5mS intervals
CLKI
91
Supply 1MHz to CIS clock output
/ T R D R E Q
118 External
DMA request signal output
/ T R D A C K
117 External
DMA acknowledge input
V R E K D A C
97
Top standard voltage (+Vref) input of A/D converter
A D C I N
96
Analog signal input of CIS
VREFA D C
102
Bottom standard voltage (-Vref) input of A/D converter
TX_A1
105
Scan motor driver control signal, TMIA0 output
TX_B1
106
Scan motor driver control signal, TMIA1 output
TX_A2
107
Scan motor driver control signal, TMIB0 output
TX_B2
108
Scan motor driver control signal, TMIB1 output
TX_EN1
109
Scan motor driver control signal, TMPHA output
TX_EN2
110
Scan motor driver control signal, TMPHB output
TX_INT
111
Scan motor interrupt output
Samsung Electronics
5-25
5-2 Scanner Part
Circuit Description
Fig.5-12 CIS Driver Clock Timing
5-2-1 Summary
Scanner part consists of image sensor which input
graphic signal using CIS (Contact Image Sensor),
scanner control signal, image processing by using
image processor, SCAN_IP. Data flow of scanner part,
block diagram of SCAN_IP, I/O port and circuit
description are as follows.
5-2-2 CIS Driver, Input Processor
CIS driver consists of /LED_GND1, 2, 3, CIS_CLK,
CIS_SH. CIS driver power supply is 12V, LED driver
power supply is 5V. Especially, /LED_GND1, 2, 3
are enable to control voltage from U18 using Q1 in
CLED signal.
As CIS input signal, minimum (-V
ref
)values supply
about 0, Maximum (+V
ref
)values supply about 1.5V
to voltage divider (R70, R71) through OP-AMP
(U16-3, 1).
Image signal from CIS supply to U31-96 through
CN3-1, U5-5, U5-7, and R75.
Содержание MSYS 5150
Страница 9: ...2 6 Samsung Electronics Specification Memo ...
Страница 16: ...3 26 Samsung Electronics Setup and Installing Memo ...
Страница 37: ...4 2 Samsung Electronics Theory of Operation ...
Страница 41: ...4 6 Samsung Electronics Memo Theory of Operation ...
Страница 116: ...Samsung Electronics 7 9 Maintenance Troubleshooting No Image ...
Страница 117: ...Samsung Electronics Maintenance Troubleshooting 7 10 ...
Страница 118: ...Samsung Electronics 7 11 Maintenance Troubleshooting All Black ...
Страница 119: ...7 12 Samsung Electronics Maintenance Troubleshooting Vertical White Line Band ...
Страница 120: ...Samsung Electronics 7 13 Maintenance Troubleshooting Dark Image ...
Страница 121: ...7 14 Samsung Electronics Maintenance Troubleshooting Background ...
Страница 122: ...Samsung Electronics 7 15 Maintenance Troubleshooting Ghost ...
Страница 123: ...7 16 Samsung Electronics Maintenance Troubleshooting Black Dot ...
Страница 124: ...Samsung Electronics 7 17 Maintenance Troubleshooting Horizontal Band ...
Страница 125: ...7 18 Samsung Electronics Maintenance Troubleshooting Irregular Density ...
Страница 126: ...Samsung Electronics 7 19 Maintenance Troubleshooting White Spot ...
Страница 127: ...7 20 Samsung Electronics Maintenance Troubleshooting Trembling at the End When OHP Printing ...
Страница 128: ...Samsung Electronics 7 21 Maintenance Troubleshooting Poor Fusing Grade ...
Страница 132: ...Samsung Electronics 7 25 Maintenance Troubleshooting No Power LCD NO display LED Off ...
Страница 133: ...Fuser Error 7 26 Samsung Electronics Maintenance Troubleshooting ...
Страница 134: ...Samsung Electronics 7 27 Maintenance Troubleshooting Paper Jam Mis feeding ...
Страница 135: ...7 28 Samsung Electronics Maintenance Troubleshooting Paper Jam Jam1 ...
Страница 136: ...Samsung Electronics Maintenance Troubleshooting 7 29 Engine Error ...
Страница 137: ...7 30 Samsung Electronics Maintenance Troubleshooting Memo ...
Страница 187: ...9 28 Samsung Electronics Electrical Parts List ...
Страница 189: ...11 Connection Diagram Samsung Electronics 11 1 ...
Страница 190: ...12 1 Main Circuit Diagram Samsung Electronics 12 1 12 Schematic Diagrams ...
Страница 191: ...Schematic Diagrams 12 2 Samsung Electronics Main Circuit Diagram ...
Страница 192: ...Main Circuit Diagram Samsung Electronics 12 3 Schematic Diagrams ...
Страница 193: ...Schematic Diagrams 12 4 Samsung Electronics Main Circuit Diagram ...
Страница 194: ...Main Circuit Diagram Samsung Electronics 12 5 Schematic Diagrams ...
Страница 195: ...Schematic Diagrams 12 6 Samsung Electronics Main Circuit Diagram ...
Страница 196: ...Main Circuit Diagram Samsung Electronics 12 7 Schematic Diagrams ...
Страница 200: ...12 3 Sensors Circuit Diagram Samsung Electronics 12 11 Schematic Diagrams ...
Страница 201: ...Schematic Diagrams 12 12 Samsung Electronics 12 4 Switch Circuit Diagram ...
Страница 202: ...Samsung Electronics 12 13 Schematic Diagrams 12 5 Joint Circuit Diagram ...
Страница 203: ...Schematic Diagrams 12 14 Samsung Electronics 12 6 OPE Circuit Diagram IF Active HIGH Logic IF Active LOW Logic ...
Страница 204: ...Samsung Electronics 12 15 Schematic Diagrams 12 7 PTL Circuit Diagram ...
Страница 205: ...Schematic Diagrams 12 16 Samsung Electronics 12 8 SCAN Circuit Diagram ...
Страница 206: ...Samsung Electronics 12 17 Schematic Diagrams 12 9 Engin Circuit Diagram ...
Страница 207: ...Schematic Diagrams 12 18 Samsung Electronics Engin Circuit Diagram ...
Страница 208: ...Samsung Electronics 12 19 Schematic Diagrams 12 10 LIU Circuit Diagram ...
Страница 210: ... Samsung Electronics Co Ltd Mar 1999 Printed in Korea P N JC68 00097A Rev 1 00 ELECTRONICS ...